SDR DALA13000645652

Service difficulty report · Floorbeam · Boeing 757251

Difficulty date: January 9, 2013
Submitted: January 10, 2013
Operation: Air carrier
Aircraft: N552NW
Make and model: Boeing 757251
Aircraft serial: 26499
Aircraft time: 31,101 hours, 12,953 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Corroded
Location: Bs 1640
Stage of operation: IN
How discovered: 9
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CORROSION ON UPPER SURFACE OF FLOORBEAM AT BS 1640 BL 0 TO LBL 15. REMOVED CORROSION IAW SRM 53-00-51, PG 104, FIG 101, DETAIL 4. FOUND OUT OF LIMITS IAW SRM 53-00-51, PG 104, FIG 101, DETAIL 4. CUT OUT UPPER SURFACE FLOORBEAM IAW SRM 53-00-51, REPAIR 3, PG 201, DETAIL 1. LOCATED AND DRILLED FLOORBEAM UPPER TEE ANGLES AND STRAPS IAW SRM 51-40-05, PG 1-4. TREATED IAW SRM 51-20-01, PG 3-7 AND PG 27. INSTALLED FLOORBEAM UPPER TEE ANGLES, STRAPS IAW SRM 51-40-02, PG 122.